Vacuum-producer.



J. WYNN, JR. VACUUM PRODUCER.

APPLICATION FILED 00119, 1912.

Patented NOV. 3. 1914.

FIG 2 FIGJ 1X 1 1 1 I 1 q 1 INVE NTOR u: Wywuurh ATT ORNIY B provide animpeller having a JOHN wvNN, an, I PANY, or CANTON, OHIO, A. M.GROSSMAN, or CANTON, omo.

01E CANTON, OHIO, ASSIGNOB TO CLIMAX. MANUFACTURING GOM- COIPARTNERSHIPCOMPOSED OF T. J. THOMAS AND VACUUM-PRODUCER.

iaiaioa.

Specification of Letters Patent.

Patented Nov. 3, 1914.

Application filed October 19, 1912. Serial No. 726,769.

To all whom it may concern I Be it known that I, JonN WYNN, Jr, acitizen of the United States of America, residing at Canton, in thecounty of Stark and State of Ohio, have invented certain new and usefull mprovcmmits in Vacuum- Producers, of which the following is aspecification, reference being had therein to the accompanying drawing.

This invention relates to a vacuum producer especially designed for thecentrifugal type of vacuum cleaning devices.

The primary object of my invention is to provide a revoluble impeller ofsmall cross sectional area. that produccsa mammum suction within acasing with a minimum expenditure of power, the construct on of themember being such that the resistance to a movement of said member isreduced to a minimum.

A further object of the invention is to improve generally upon the termof contriiugal fan, now in general use, in regard to the inherentregulation of the capacity of air displacement, without sacrificing orreducing the vacuum producing quality of the apparatus itself.

Another object of this invention is to and radially disposed outlet thatcreates a vacuum in a casing when the impeller is revolved therein.

A further object of this invention is to accomplish the above results bya mechanical construction, that is simple, durable, in expensive tomanufacture and highly efficient as a practical im )eller for theproduction of vacuum and dis )laoernent of air.

With the above and ot or objects in view the invention resides in anovel construction, combination and arrangement of parts to behereinafter specifically described and then claimed,

Reference will now be had tothe drawing, wherein .Figure 1 is a verticalsectional view of the impeller, in accordance with this 1nvcntion, asarranged in a casing. Fl 2 is an edge view of the impeller, and Fig. 31s a side elevation of a portion of the same.

An impeller in accordance wlth this mcentral intakevention comprises twothin disks 1 and 2 riveted or otherwise connected together, as at 3,whereby the portions of the periphery of the impeller, other than theportions constituting the outlet ends for the air passages or channels,to be presently referred to. will be sealed. The sealing of theperiphery at the points referred to will reduce resistance to a minimumduring the operation of the im eller.

The dis 5 1 and 2 are formed with radiall disposed confronting offsetportions 4 an 5 and the said confronting offset portions provideradially disposed air passages or channels substantially oblong oroval-shaped in cross section at any point throughout their length, andwhich extend from a point near the center of the said disks 1 and 2 tothe fperiphery thereof. The offset portions 4: o' the disk 1 intersecteach other at the center of said disk and the oilset portions center of:the disks 2, and the said interseetin portions oppose each other andprovire what is termed an air expansion chamber for a purpose to bepresently reu of the disk 2 intersect each other at the ferred to. Theintersection of the offset por tions 4 is provided with an opening 6,the latter being disposed centrally of said intersection and constitutcsan intake. The opening (5 is of such diameter as not to completely takeup the entire area of the said intersection in which said opening isarranged so that the offset portions at at their inner ends can mergeinto each other. The

intersection of the offset portions 5 of the disk 2 is cut away toprovide a central opening 7 and which is of less diameter than theopening 6. The combined area of the inlets for the air passages orchannels is of less area than the area of the intake opening 6 so thatthe air channels will only take up the amount of air what they require,under such circumstances providing the impeller with a self inherentthrottle and thereby obtain a continuous uniform movement of theimpeller when the latter is operated.

The expansion chamber is employed to prevent eddies in the air suppliedthereto through the intake when a change in direction of ilovv of theair is had, which change in direction of flow occurs as the air isdischarged from the chamber through the air channels or passages asthese latter are disposed at an angle With respect to the in take 6.

Mounted in the opening 7 is the end of a hub 8 and which is providedwith radially disposed lugs 9, riveted or otherwise connected-as at 10to the offset portions 5 of the disk 2, 'l'he huh 8 is mounted upon a"revoluhle shaft 11 associated With an op erating means therefor, by Wayof example the operating motor employed in vacuumcleaning devices orother apparatus,

The disks 1 and 2 constitute a revoluble bladeless Wheel or impeller andWhich is inclosed by a flat circular casing having Walls 12 and 13, thelatter being detachable relatively to the former, The peripheral edge ofthe Wall 12 terminates in a cylindrical conduit 1d, and said Wall has acentral neck 15 that extends into the opening 6 of the offset portions lof the disk 1, said neck serving as an inlet to the channel of saidimpeller.

The centrifugal or rotary movement of the impellervvithiu the casingproduces an out-draft or suction in the channel formed by the ofisetportions i and 5, and as the cross sectional area of the member thatrevolves Within the casing has been reduced to a minimum and thelongitudinal edges of the ofiset portions l and 5 rounded or tapered,the member ofiers little or no resistance, consequently there is noretardation or re-action Within the casing that would tend to impair thevacuum producing quality of the rotary member or'iirn- ;peller.

The portions of the impeller between the air channels provides What maybe termed a dead space, the said portions being sealed, due to the factthat the disks are fixedly secured together, under such conditions theair from the intake can only be conducted through the channels and notbetween the portions of the disks interposed between the channels andthis space Which is termed dead space reduces the capacity of theimpeller.

It is thought that the operation and utility of the vacuum producer Willbe apparent Without further description, and While in the drawing thereis illustrated a preferred embodiment of the invention, it is to beunderstood that the structural elements are susceptible to suchvariations and modifications as fall within the scope of the appendedclaims What l claim is z 1. An impeller for moving fluid which consistsof a rotary body provided with an intake opening in one side and withpassages extending from near its center toward its periphery, in whicssages centrifugal motion is imparted to '1 ud passing through them, andwith an e sion chamber be tween said intake openin and the inlets tosaid passages, the area oi said intake being {greater than the sum ofthe areas of. said inlets. f

2. ln a vacuum producer for a vacuum cleaning device of the centrifugaltype, an impeller consisting of a, pair of disks fixedly securedtogether and formed With spaced radially disposed otiset portions, theoffset portions of one disk registering With the said offset portions ofthe other disk providing air channels, said channels being uninterruptedfrom end to end and With the Walls thereoi smooth throughout therebyproviding for the continuous discharge of air free from eddying andback-lashing, said ofiset portions intersecting each other at thecenters of said disks, one of said intersections cut away to provide acentral intake open,- ing of a diameter less than the Width breadth ofthe said intersection.

8. In a vacuum producer for a vacuum cleaning device of the centrifugaltype, an

impeller consisting of a pair of disks fixedly and I 4 secured togetherand formed with spaced radially disposed offset portions, the ofisetportions of one disk registering With the offset portions of the otherdisk providing air channels producing a smooth flow, said channels beinguninterrupted from end to end and with the Walls thereof smooththroughout thereby providing for the continuous discharge of air freefrom eddying and backlashing, said offset portions intersecting eachother at the centers of the disks, one of said intersections cut away toprovide a central intake opening of a diameter less than the Width andbreadth of said intersection, the area of said intake opening beinggreater thanthe; combined area of the outlet openings of the channels.

i. in a vacuum producer for a vacuum cleaning device of the centrifugaltype, an-

of the channels at their inner termini rounded thereby producing acontinuous smooth flow of air at the intake during the operation of theimpeller, one ofsaid intersections cut awayto provlde a central intakeopening of a dlameter less than the Width and its breadth of the saidintersection and of greater area than the combined area of the outletopenings of the channels.

5. In vacuum producers for vacuum cleaning machines of the centrifugaltype, an 1mpeller formed of a circular member having radially disposedair channels intersecting at their inner termini and extending from thecenter of said member to the periphery thereof, the walls of said.channels at the intersection thereof being rounded to produce acontinuous smooth flow of air at the intake of the channels durin theoperation of the impeller, said meniber further provided with a centraldisposed intake opening communicating with the inner termini of saidchannels, said channels being uninterrupted from end to end and havingthe walls thereof smooth throughout there by providing for thecontinuous discharge of air free from eddying and back-lashing duringthe operation of the impeller.

6. In vacuum producers for vacuum cleaning machines of the centrifugaltype, an impeller formed of a circular member having radially disposedair channels intersect-- ing at their inner termini and extending fromthe center of said member to the pe riphery thereof, the walls of saidchannels at the intersection thereof being rounded to produce acontinuous smooth flow of air at the intake of the channels during theoperation of the impeller, said member further provided with a centrallydisposed intake opening communicating with the inner termini of saidchannels, said channels being uninterrupted from end to end and havingthe walls thereof smooth throughout thereby providin for the continuousdischarge of air free from eddying and back-lashing during the operationof the impeller, the area of said intake opening being greater than thecombined area of the outlet openings of the channels.

7. In vacuum roducers for vacuum cleaning machines of the centrifugaltype, an impeller formed of a circular member having radially disposedair channels intersecting at their inner termini and extending from thecenter of said member to the periphery thereof, the walls of saidchannels at the intersection thereof being rounded to produce acontinuous smooth flow of air at the intake of the channels during theoperation of the impeller, said member further provided with a centrallydisposed intake opening communicating with the inner termini of saidchannels, said channels being uninterrupted from end to end and havingthe walls thereof smooth throughout thereby providing for the continuousdischarge of air free from eddying and back-lashing during the operationof the impeller, said channels being substantially oval-shaped intransverse section.

8. In vacuum producers for vacuum cleaning machines of the centrifugaltype, an impeller formed of a circular member having radially disposedair channels intersecting at their inner termini and extending from thecenter of said member to the periphery thereof, the walls of saidchannels at the intersection thereof being rounded to produce acontinuous smooth flow of air at the intake of the channels during theoperation of the impeller, said member further provided with a centrallydisposed intake opening communicating with the inner termini of saidchannels, said channels being uninterrupted from end to end having thewalls thereof smooth throughout thereby providing for the continuousdischarge of air free from eddying and back-lashing during the operationof the impeller, the portions of said impeller between the sides of saidchannels being of less thickness than the width of the channels.

9. In vacuum producers for vacuum cleaning machines of the centrifugaltype, an impeller formed of a circular member having radially disposedair channels intersecting at their inner termini and extending from thecenter of said member to the periphery thereof, the walls of saidchannels at the intersection thereof being rounded to produce acontinuous smooth flow of air at the intake of the channels during theoperation of the impeller, said member further provided with a centrallydisposed intake opening common to the inner termini of said channels,said channels being uninterrupted from end to end and having the wallsthereof smooth throughout thereby providing for the con tinuousdischarge of air free from eddying and baclclashing during the operationof the impeller, said channels being substantially oval-shaped intransverse section at any point throughout their length and each of saidchannels being of the same area from end to end.

10. In a vacuum producer for a vacuum cleaning device of the centrifugaltype, a rotary impeller formed of a pair of thin disks fixedly securedtogether with their in nor faces abutting and having registering oil'sctportions providing radially disposed air channels having the wallsthereof smooth throughout thereby providing for the continuous dischargeof air free from eddying and back-lashing, one of said disks cut away toprovide an intake common to all of said channels, and the other of saiddisks adapted to have secured thereto means for operating the impeller,said channels being ovalshaped in transverse section.

11. In a vacuum producer for a vacuum cleaning device of thecentrifugal, type, a rotary impeller formed of a pair of thin disksfixedly secured together with their inner faces abutting and havingregistering Liza p 4 ofi set portions providing radially disposeduninterrupted air channels having the walls thereof smooth throughoutthereby provid ing for the continuous discharge of air free from eddyingand back-lashing, said ofiset portions intersecting at their innertermini, one of said intersections cut away to provide an intake commonto all of said channels and the other of said intersections adapted tohave secured thereto means for operating the impeller, said channelsbeing oval-shaped in transverse section.

12. In a vacuum producer for a vacuum cleaning device of the centrifugaltype, a rotary impeller formed of a pair of thin disks fixedly securedtogether with their inner faces abutting and having registering offsetportions providing radially disposed uninterrupted air channels havingthe walls thereof smooth throughout thereby providing for the continuousdischarge of air free from eddying and back-lashing, said ofi'setportions intersecting at their inner termini, one of said intersectionscut away to provide an intake common to all of said channels and theother of said intersections adapted to have secured thereto means foroperating the impeller, the area of said intake opening being greaterthan the combined area of the outlets of the channels to throttle theair discharged thereby preventing destructive overloading of the primemover for the impeller.

13. In a vacuum producer for a vacuum cleaning device of the centrifugaltype, an impeller formed of a circular member having radially disposedair channels intersecting at their inner termini, the walls of saidchannels at the intersections thereof'being rounded thereby producing acontinuous flow of air at the intake during the operation of theimpeller.

14. In a vacuum producer for a vacuum cleaning device of the centrifugaltype, an impeller having oppositely disposed registering offset portionsproviding air channels uninterrupted from end to end and with the wallsthereof smooth throughout, said offset portions intersecting each otherat the centers of the disks, one of said intersections misses cut awayto provide an intake, the area of the intake being greater than thecombined area of the outlet openings of the channels.

15. In a vacuum producer for a vacuum cleaning device of the centrifugaltype, a rotary element having a centrally disposed chamber having theside walls thereof offset with respect to each other, said elementfurther provided with radially disposed air channels communicating withsaid chamber, one of said offset portions cut away to provide a centralintake opening of less diameter than the width and breadth of the saidofiset portion, the area of said intake opening being greater than thecombined area of the outlet openings of the channels.

16. In a vacuum producer for a vacuum cleaning device of the centrifugaltype, a rotary element having a centrally disposed chamber having theslde walls thereof offset with respect to each other, said elementfurther provided with radially disposed air channels communicating withsaid chamber, one of said offset portions cut away to provide a centralintake opening of less diameter than the width and breadth of the saidoffset portion, the area of said intake opening belng greater than thecombined area of the outlet openings of the channels, the walls of saidchannels at the points of communication between the channels and thechamber being rounded, thereby producing a continu ous flow of air atthe intake during the operation of the element.

17. In a vacuum producer for a vacuum cleaning deviceof the centrifugaltype, an impeller formed of a circular member having air channelsintersecting at their inner termini, the walls of said channels at theintersections thereof bein rounded thereby producing a continuous li owof air at the intake during the operation of the impeller.

In testimony whereof I aflix my signature in the presence of twowitnesses.

JOHN WYNN, JR.

Witnesses:

MAX II. SRoLovrrz, Kn'rnnmnn Enema.

